alarm going off

 i have installed a ultra start 430 on a 95 chevy s10. my problem is that it works  fine until you start the enginethen the alarm goes off and you cant disarm it or over ride it.i replace the unit with another one and the same thing.the wires i hook up are correct but also the car has aproblem with it's brake lights. what i'm thinking is .that abad current is going to the lights and messing it up. thanks

ok i unstand what your saying, but even when you trurn off the ing;

you still cant turn it off. i disconnect the 12volt  wire and then pluged it back in

and it still won't disarm/arm. and no it just abasic alarm.

ok i read what was reply and let me make myself clear

this ALARM does not have a remote starter and also has no

power door lock they are manuel, the ? is sense the brake lights

are not working would it send a bad current back to the brain

to make it act that why,also i replaced it once with another brain

and the samething happened. the only wires that are hooked up

are 12volt -ing;-parking+lights-doortrigger and the siren wire and ground

i found out what the problem was it was the car not the alarm or the install. the car had some bad connention before the install.

thanks everybody.